The number of moles of mgo produced when 0.20 mole of o2 reacts completely is 2mg + o2 → 2mgo

The reaction of 0.20 moles of oxygen on complete utilization produces 0.40 moles of MgO.

From the reaction,

1 mole of oxygen produced 2 moles of MgO.

So, 0.20 moles of oxygen produces:

Moles of MgO produced = 0.20 2

Moles of MgO produced = 0.40 moles.

The reaction of 0.20 moles of oxygen on complete utilization produces 0.40 moles of MgO.

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? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.